2. Signaling Pathways
  3. PROTAC
  4. PROTAC Linkers

PROTAC Linkers

PROTAC Linkers

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PROTACs (Proteolysis Targeting Chimeric Molecules) are heterobifunctional protein degraders and promising targeted therapeutics candidates for cancer. The PROTAC linker connects two functional motifs of a PROTAC, a target protein binder and an E3 ligase recruiter.

The linker plays an important role in a PROTAC. The features of the linker (type, length, attachment position) can affect the formation of ligase:PROTAC:target ternary complex, resulting in influencing the efficient ubiquitination of the target protein and its ultimate degradation. The optimal lengths of the PROTAC linkers are reported varying from 12-carbon to over 20-carbon, and the commonly used linkers in the development of PROTACs are PEGs, Alkyl-Chain and Alkyl/ether.

PROTAC Linkers Isoform Specific Products:

PROTAC Linkers Isoform Comparison
Cat. No. Product Name CAS No. Purity Chemical Structure
  • HY-43581
    endo-BCN-O-PNB 1263166-91-1 99.25%
    endo-BCN-O-PNB is an alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs. endo-BCN-O-PNB is a click chemistry reagent, it contains a BCN group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    endo-BCN-O-PNB
  • HY-135820
    m-PEG12-acid 2135793-73-4 99.12%
    m-PEG12-acid is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    m-PEG12-acid
  • HY-108368
    Azido-PEG2-CH2COOH 882518-90-3 99.03%
    Azido-PEG2-CH2COOH is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Azido-PEG2-CH2COOH is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG2-CH2COOH
  • HY-117009
    Bis-PEG9-NHS ester 1008402-79-6 ≥98.0%
    Bis-PEG9-NHS ester is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. Bis-PEG9-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Bis-PEG9-NHS ester
  • HY-42569
    Methyl 3-hydroxypropanoate 6149-41-3 99.83%
    Methyl 3-hydroxypropanoate is an alkyl/ether-based PROTAC linker that can be used in the synthesis of PROTACs.
    Methyl 3-hydroxypropanoate
  • HY-140215
    Azido-PEG6-amine 957486-82-7
    Azido-PEG6-amine is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG6-amine is also a non-cleavable 6 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Azido-PEG6-amine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG6-amine
  • HY-W040135
    Fmoc-NH-PEG8-CH2CH2COOH 756526-02-0 ≥98.0%
    Fmoc-NH-PEG8-CH2CH2COOH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Fmoc-NH-PEG8-CH2CH2COOH
  • HY-140830
    m-PEG12-azide 2170098-29-8 98.6%
    m-PEG12-azide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. m-PEG12-azide is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    m-PEG12-azide
  • HY-42149
    NH2-PEG2-C2-Boc 756525-95-8 ≥98.0%
    NH2-PEG2-C2-Boc is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. NH2-PEG2-C2-Boc is also a non-cleavable 2 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    NH2-PEG2-C2-Boc
  • HY-108369
    Azido-PEG1-CH2CO2H 79598-48-4 99.58%
    Azido-PEG1-CH2CO2H is a PROTAC linker, which refers to the alkyl/ether composition. Azido-PEG1-CH2CO2H can be used in the synthesis of PROTAC BRD4 Degrader-1. Azido-PEG1-CH2CO2H is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG1-CH2CO2H
  • HY-133400
    endo-BCN-PEG3-mal 2141976-33-0 98.51%
    endo-BCN-PEG3-mal is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. endo-BCN-PEG3-mal is a click chemistry reagent, it contains a BCN group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.
    endo-BCN-PEG3-mal
  • HY-140150
    Azido-PEG3-Val-Cit-PAB-PNP 2055047-18-0 99.09%
    Azido-PEG3-Val-Cit-PAB-PNP is a cleavable 3 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Azido-PEG3-Val-Cit-PAB-PNP is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. Azido-PEG3-Val-Cit-PAB-PNP is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    Azido-PEG3-Val-Cit-PAB-PNP
  • HY-140087
    N-(Amino-PEG2)-N-bis(PEG3-azide) 2606952-86-5 99.85%
    N-(Amino-PEG2)-N-bis(PEG3-azide) is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. N-(Amino-PEG2)-N-bis(PEG3-azide) is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. It can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) reactions with molecules containing DBCO or BCN groups.
    N-(Amino-PEG2)-N-bis(PEG3-azide)
  • HY-126889
    Bis-PEG5-NHS ester 756526-03-1 99.83%
    Bis-PEG5-NHS ester is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. Bis-PEG5-NHS ester is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Bis-PEG5-NHS ester
  • HY-W008005
    Amino-PEG4-alcohol 86770-74-3 99.81%
    Amino-PEG4-alcohol is a PEG-based PROTAC linker can be used in the synthesis of PROTACs. Amino-PEG4-alcohol is also a non-cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Amino-PEG4-alcohol
  • HY-W040246
    Fmoc-NH-PEG6-CH2CH2COOH 882847-34-9 99.29%
    Fmoc-NH-PEG6-CH2CH2COOH is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs).
    Fmoc-NH-PEG6-CH2CH2COOH
  • HY-I0781
    Boc-Hyp-OH 13726-69-7 99.78%
    Boc-Hyp-OH is a non-cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs). Boc-Hyp-OH is also a alkyl chain-based PROTAC linker that can be used in the synthesis of PROTACs[2]
    Boc-Hyp-OH
  • HY-W006524
    H2N-PEG2-CH2COOH 134978-97-5 99.87%
    H2N-PEG2-CH2COOH is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.
    H2N-PEG2-CH2COOH
  • HY-W021787
    NH2-PEG4-CH2CH2COOH 663921-15-1 99.90%
    NH2-PEG4-CH2CH2COOH is a cleavable 4 unit PEG ADC linker used in the synthesis of antibody-drug conjugates (ADCs). NH2-PEG4-CH2CH2COOH is also a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    NH2-PEG4-CH2CH2COOH
  • HY-141106
    m-PEG12-NHS ester 2207596-93-6 ≥98.0%
    m-PEG12-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs.
    m-PEG12-NHS ester
PROTAC Linkers Isoform Comparison

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